The Eighth Child had shown a minuscule gap. It was enough for Lexi to see and seize it.
The Child could not react in time to the slash she let rip from her lowered stance. It was powerful, and it unleashed a combination of magic and martial energy that clashed and bit the air in an electric frenzy.
Lexi turned the tides of their fight and pushed the Child backward with incessant swings that the Child had to dodge. He risked losing his fingers and hands if he tried to block them.
Lexi's sword was both sharp and powerful, even without her energies pervading it. After all, it was a treasured sword that had survived millennia of neglect. It would have been even better if it hadn't gone through that. But going through that and still being a great sword was proof of the craftsmanship.